Woodworking machinery



L. FRITZ.

WOODWORKING MACHINERY.

APPLICATION HLED lULY 9,1920.

1,421,204. Patented Jun 27, 1922;

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Qwpentoz r L. FRITZ. WOODWORKING MACHINERY APPLICATION LED JULY 9,1920.

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LOUIS FRITZ, or IYIEMlI-IIS, rnlvnnssnn.

WOODWOBKING MACHINERY.

Application filed July 9,

T 0 all Q0]! 0m it may 007i 061% Be it known that I, LOUIS FRITZ, acitizen of the United States, and a resident of Memphis, in the countyof Shelby and State of Tennessee. have invented certain new and usefulImprovements in lVoodworking Machinery; and I do hereby declare thefollowing to be a full, clear. and eva ct description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same. 7

This invention relates to improvements in woodworking machinery and moreparticularly to a mill for sawing and planing timber,-one object of theinvention being to provide a mill which will operate to saw a logprogressively so that an entire log shall be sawed into boards bysubjecting said 10;; successively to the action of two or more batteriesof saws, and also to plane the edges of the sawed boards. v I

A further object is to so construct a saw mill that a log may besubjected to one battery of band saws to sever a plurality of boardsfrom two sides of the log; so that, after giving the log a quarter turnon the carrier, the said log may be subjected to the action of anotherbattery of band saws to sever the remaining part of the log into boards,and so that the conveyor will operate continuously to move the logprogressively through the mill.

lVith these and other objects in view, the invention consists in certainnovel features of construction and combinations of parts as hereinafterset forth and pointed out in the claims.

In the accompanying drawings; Figure 1 is a plan view; Figure 2 is aview illustrating the first battery of saws and planers; Figure 3 is aview showing the second battery of saws and planers; Figure 4 is adetail view of the planers, and Figure 5 is a plan view showing thesecond battery of saws and planers.

In the drawings, I have represented two batteries A and B of sawssuitably spaced apart and an endless conveyor C is provided to move alog first past one battery of saws and (after the log has been given aturn) to move it past the other battery of saws.

In constructing the battery, A, of saws, I provide suitable framework.indicated at 1 in which the journals of upper stepped cone pulley 2, 3and lower stepped cone pulleys 2. 3 are suitably mounted. Passing oversteps of the pulleys.

Specification of Letters latent. @atentgd Jung 27,1922,

1920. Serial No. 394,987.

' the upper and lower stepped pulleys 2 and 2? is a series of band saws4 varying in length aocorc'lingto the distance apart of the steps of therespective pulleys and spaced apart distances equal to the "depth of theFor instance, if the boards one inch thick are "desired, the band sawspassing over the pulleys 2, '2 will be spaced one inch apart, and iftwo-inch boards be desired certain of the saws may be removed. The conepulleys be con structed with a greater or less number of steps thanshown in the drawing for the accommodation of more or less saws. Bandsaws '5 are suitably arranged to pass over the stepped cone pulleys 3 3,and the two series of saws 4 and 5 constituting the battery A of saws,are spaced apart to accommodate the conveyor C. This conveyor 'co'r'nprises a series of endless cables 6 passing over a number of sets ofpulleys on shafts 6 carried by suitable bracket 6 the outer pulleys Toteach set being somewhat larger than the intermediate pulleys 8 so that acradle will be formed to receive the log.

At a distance in advance of the battery A of saws, somewhat greater thanthe average length of the logs to be sawed, the battery B of saws islocated. In constructing this battery of saws, I provide suitableframework 9 having at its top and bottom, bearings 10 for the journalsof drums 11 and 12. A plurality of band saws 13, arranged side by side,pass over these drums and these saws are so proportioned that they arecapable of being forced inwardly. Cone stepped idlers 14 are mounted insuitable bearings on the frame-work 9 so as to be disposed somewhatbelow the plane of the upper drum 11 and similar cone stepped idlers 15are mounted in suitable bearings on the framework so as to be disposedsomewhat above the plane of the lower drum 12. The stepped idlers 14 and15 are so disposed that their steps will engage the saws 13 successivelyso that the active portions of the saws will be disposed equal distancesapart and thus be adapted to cut the log into boards of equal thlckness.

When a log has been subjected to the action of the battery A of saws tocut slabs from two sides and to cut two or more boards, the log willhave two flat sides and two slab ends, so that the partially out logwill be approximately rectangular in shape. The log will now be given aquarter turn, either manually or with the use of any suitward, theturned log will lie-presented to.

the saws of the battery B (the cables of the conveyor passing betweenthe saws) and these saws will remove the slab ends and sever the loginto boards of equal thickness.

Between the batteries A and B 01. saws, planers 16, 1G and 17, 17 arelocated and adjustably secured as at 18 to the framework. Each of theseplaners is made in the form of a stepped cone having suitable cuttersand said stepped cone planers are so proportioned and disposed that theywill operate to plane the up er and lower edges of the boards severed ythe battery A of saws. Each stepped planer will be provided withsuitable means indicated at 19 for adjusting the same relatively to theedges of the boards to be planed. i

Pairs of planers 20, and 21 may be located in advance of the batteryB ofsaws for the purpose of planing the upper and lower edges of the boardssevered by these saws, and the construction and operation of the planers20 and 21 are the same as previously descrzi bed in connection with theplaners 16, 1 i i All of the saw pulleys and drums as well as theplaners and the conveyor cables may be operated by suitable belting andgearing receiving motion from a single sourceof power.

With the use of my improvements, 1 am enabled quickly to saw a logcompletely into boards progressively as the log is carried past the twobatteries oi? saws by means of the endless conveyor cables, thusobviating the necessity "for moving the log back and forth, and theupper and lower edges of boards will. be planed. I 7

Various changes might be made in the details of construction of myinvention with out departing from the spirit thereo'l or limiting itsscope and hence I do not wish: a

. to restrict myself to the precise details herein'set forth.

Having fully described my invention what I claim as new and desire tosecure by LettersPatent, is

In saw mill. apparatus, the combination LOUIS FRITZ.

Witnesses I W. ST ART Hones,

R. S. FERGUSON.

